What I am wanting to do is to use one or the other of the PCs as the main audio source (multiple inputs and outputs) and have the second unit act as a file server for the entire system. The speaker outputs from the two radios mentioned, in addition to the DV-Dongle (for streaming Amateur RAdio Digital Voice over the Internet) and a Bluetooth connection to my Android Smartphone, will be routed to specific speakers in the stock locations (Cellphone and DV audio will be to speakers mounted behind the monitor) and will be intended to override any music that might be playing when they are actively receiving.